A lot of what Tommy Wonder did (and made) was very clever. Dan Harlan is very clever. However, that
means both gaining and losing something, as Dan's perspective is sometimes not congruent with
Tommy's.
If you love Books of Wonder, you will find this a good addition.
Net-net,
there are some really interesting things in the project. However, bang for the buck has to go to
Dan's Tarbell downloads.
(of course, you should probably just get them both--Dan Harlan is
a great teacher).